| 单词 | backup |
| 释义 | Word Frequency backup or back-up (ˈbækʌp) noun 1. additional support or resources to help accomplish a task Classroom assistants give backup to teachers. Police grew frustrated because they were not getting much backup from the courts. I've had no backup from my family, none of them even seemed concerned. We are here to provide backup if you need it. the technological backup required for the mission Alternative treatments can provide a useful backup to conventional treatment. Midwives must have the backup of specialist obstetrician services. 2. reinforcements provided to complete a task More officers arrived on the scene to provide backup. Airports are required to have backup from local fire brigades in case of a seriousincident. He was told he might not receive police backup on the street. The two bodyguards were frantically calling for backup. 3. a reserve or substitute Every part of the system has a backup. There is no emergency backup immediately available. 4. computing a file or set of files copied for security purposes It didn't matter that I had accidentally wiped the disk because there was a backup. 5. the overflow from a blocked drain or pipe 6. US a traffic jam or tailback usually caused by something blocking the road The accident caused a backup on the freeway. a traffic backup on the Bay Bridge modifier 7. able to provide support We need a backup team in case of emergencies. Does the company have a 24-hour backup service? 8. able to act as a substitute or alternative What if you can't borrow your mum's car? Do you have a backup plan? 9. computing being or relating to a file or set of files copied for security purposes Computer users should make regular backup copies of their work. I was able to reload the files from a backup disk a backup storage device |
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